Patents by Inventor Lawrence Lei
Lawrence Lei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20080072823Abstract: The invention provides a removable first edge ring configured for pin and recess/slot coupling with a second edge ring disposed on the substrate support. In one embodiment, a first edge ring includes a plurality of pins, and a second edge ring includes one or more alignment recesses and one or more alignment slots for mating engagement with the pins. Each of the alignment recesses and alignment slots are at least as wide as the corresponding pins, and each of the alignment slots extends in the radial direction a length that is sufficient to compensate for the difference in thermal expansion between the first edge ring and the second edge ring.Type: ApplicationFiled: October 10, 2007Publication date: March 27, 2008Inventors: Joseph Yudovsky, Lawrence Lei, Salvador Umotoy, Tom Madar, Girish Dixit, Gwo-Chuan Tzu
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Publication number: 20080044568Abstract: Techniques of the present invention are directed to reducing clogging of nozzles. In one embodiment, a method of introducing a gas into a semiconductor processing chamber comprises providing a nozzle having a proximal portion connected to a chamber wall or a gas distribution ring of the semiconductor processing chamber and a distal portion oriented inwardly away from the chamber wall into an interior of the semiconductor processing chamber. The nozzle includes a proximal end coupled with a gas supply, a nozzle opening at a distal end, and a heat shield disposed around at least a portion of the nozzle opening. A nozzle passage extends from the proximal end to the distal end. The method further comprises flowing a gas from the gas supply through the proximal end, the nozzle passage, and the nozzle opening of the nozzle into the interior of the semiconductor processing chamber.Type: ApplicationFiled: October 23, 2007Publication date: February 21, 2008Applicant: Applied Materials, Inc.Inventors: Lawrence Lei, Siqing Lu
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Publication number: 20070254481Abstract: In one embodiment, a method for forming a tungsten material on a substrate surface is provide which includes positioning a substrate within a deposition chamber, heating the substrate to a deposition temperature, and exposing the substrate sequentially to diborane and a tungsten precursor gas to form a tungsten nucleation layer on the substrate during an atomic layer deposition (ALD) process. The method further provides exposing the substrate to a deposition gas comprising hydrogen gas and the tungsten precursor gas to form a tungsten bulk layer over the tungsten nucleation layer during a chemical vapor deposition (CVD) process. Examples are provided which include ALD and CVD processes that may be conducted in the same deposition chamber or in different deposition chambers.Type: ApplicationFiled: June 21, 2007Publication date: November 1, 2007Inventors: MORIS KORI, Alfred Mak, Jeong Byun, Lawrence Lei, Hua Chung, Ashok Sinha, Ming Xi
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Publication number: 20070063698Abstract: A method and apparatus are provided for measuring the thickness of a test object. The apparatus includes an eddy current sensor having first and second sensor heads. The sensor heads are positioned to have a predetermined gap therebetween for passage by at least a portion of the test object through the gap. The sensor heads make measurements at given sampling locations on the test object as the test object is moved through the gap. The apparatus also includes a position sensing mechanism to determine positions of the sampling locations on the test object. The apparatus also includes an evaluation circuit in communication with the eddy current sensor and to the position sensing mechanism for determining the thickness of the test object at the sampling locations.Type: ApplicationFiled: September 18, 2006Publication date: March 22, 2007Applicant: Applied Materials, Inc.Inventors: Lawrence Lei, Siqing Lu, Yu Chang, Cecilia Martner, Quyen Pham, Yu Gu, Joel Huston, Paul Smith, Gabriel Miller
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Publication number: 20070040265Abstract: A substrate support comprises top, middle and bottom plates which are brazed together. The top plate has a top surface with a plurality of outwardly projecting mesas dispersed across a recessed pocket, a network of recessed grooves, a vacuum port terminating in the recessed grooves, and plurality of gas ports. The middle plate has a plurality of middle feedthroughs aligned to corresponding top feedthroughs of the top plate, and the bottom plate has a plurality of bottom feedthroughs aligned to the middle feedthroughs of the middle plate. The top and middle plates are joined by a first brazed bond layer and the middle and bottom plates are joined by a second brazed bond layer.Type: ApplicationFiled: August 17, 2006Publication date: February 22, 2007Applicant: Applied Materials, Inc.Inventors: Salvador Umotoy, Lawrence Lei, Gwo-Chuan Tzu, Xiaoxiong Yuan, Michael Jackson, Hymam Lam
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Publication number: 20060292874Abstract: In one embodiment, a method for forming a tungsten material on a substrate surface is provide which includes positioning a substrate within a deposition chamber, heating the substrate to a deposition temperature, and exposing the substrate sequentially to a first reducing gas and a tungsten precursor gas to form a tungsten nucleation layer on the substrate during an atomic layer deposition (ALD) process. The method may further provide exposing the substrate to a deposition gas comprising a second reducing gas and the tungsten precursor gas to form a tungsten bulk layer on the tungsten nucleation layer during a chemical vapor deposition (CVD) process. Examples include that the ALD and CVD processes are conducted in the same deposition chamber or in different deposition chambers.Type: ApplicationFiled: August 29, 2006Publication date: December 28, 2006Inventors: Moris Kori, Alfred Mak, Jeong Byun, Lawrence Lei, Hua Chung, Ashok Sinha, Ming Xi
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Publication number: 20060223286Abstract: A method and apparatus for atomic layer deposition (ALD) is described. The apparatus comprises a deposition chamber and a wafer support. The deposition chamber is divided into two or more deposition regions that are integrally connected one to another. The wafer support is movable between the two or more interconnected deposition regions within the deposition chamber.Type: ApplicationFiled: June 12, 2006Publication date: October 5, 2006Inventors: Barry Chin, Alfred Mak, Lawrence Lei, Ming Xi, Hua Chung, Ken Lai, Jeong Byun
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Publication number: 20060196603Abstract: Techniques of the present invention are directed to distribution of deposition gases onto a substrate. In one embodiment, a gas distributor for use in a processing chamber is provided. The gas distributor includes a body having a gas deflecting surface and a gas distributor face. The gas deflecting surface defines a cleaning gas pathway. The gas distributor face is disposed on an opposite side of the body from the gas deflecting surface and faces toward a substrate support member. The gas distributor face includes a raised step and at least one set of apertures through the raised step. The at least one set of apertures are adapted to distribute a deposition gas over a substrate positioned on the substrate support member.Type: ApplicationFiled: March 7, 2005Publication date: September 7, 2006Applicant: Applied Materials, Inc.Inventors: Lawrence Lei, Siqing Lu, Steven Gianoulakis, Won Bang, David Sun, Yen-Kun Victor Wang
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Publication number: 20060128132Abstract: A method and system to reduce the resistance of refractory metal layers by controlling the presence of fluorine contained therein. The present invention is based upon the discovery that when employing ALD techniques to form refractory metal layers on a substrate, the carrier gas employed impacts the presence of fluorine in the resulting layer. As a result, the method features chemisorbing, onto the substrate, alternating monolayers of a first compound and a second compound, with the second compound having fluorine atoms associated therewith, with each of the first and second compounds being introduced into the processing chamber along with a carrier gas to control a quantity of the fluorine atoms associated with the monolayer of the second compound.Type: ApplicationFiled: January 24, 2006Publication date: June 15, 2006Inventors: Ashok Sinha, Ming Xi, Moris Kori, Alfred Mak, Jeong Byun, Lawrence Lei, Hua Chung
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Publication number: 20060048707Abstract: Techniques of the present invention are directed to reducing clogging of nozzles. In one embodiment, a method of introducing a gas into a semiconductor processing chamber comprises providing a nozzle having a proximal portion connected to a chamber wall or a gas distribution ring of the semiconductor processing chamber and a distal portion oriented inwardly away from the chamber wall into an interior of the semiconductor processing chamber. The nozzle includes a proximal end coupled with a gas supply, a nozzle opening at a distal end, and a heat shield disposed around at least a portion of the nozzle opening. A nozzle passage extends from the proximal end to the distal end. The method further comprises flowing a gas from the gas supply through the proximal end, the nozzle passage, and the nozzle opening of the nozzle into the interior of the semiconductor processing chamber.Type: ApplicationFiled: September 3, 2004Publication date: March 9, 2006Applicant: APPLIED MATERIALS, INC.Inventors: Lawrence Lei, Siqing Lu
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Publication number: 20050271814Abstract: A multi-station deposition apparatus capable of simultaneous processing multiple substrates using a plurality of stations, where a gas curtain separates the stations. The apparatus further comprises a multi-station platen that supports a plurality of wafers and rotates the wafers into specific deposition positions at which deposition gases are supplied to the wafers. The deposition gases may be supplied to the wafer through single zone or multi-zone gas dispensing nozzles.Type: ApplicationFiled: August 5, 2005Publication date: December 8, 2005Inventors: Mei Chang, Lawrence Lei, Walter Glenn
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Publication number: 20050268857Abstract: Techniques for a door system for sealing an opening between two chambers in a semiconductor processing system are described. The opening has at least one angled corner. The door system includes a door, actuator, and sealing member. The door is moveable in the plane and has at least one angled corner to align the door with the opening. The actuator moves the door to selectively open and close the opening. The sealing member seals the opening when the door is in a closed position. The door is sized to apply substantially uniform seal compression to the sealing member when in the closed position.Type: ApplicationFiled: December 3, 2004Publication date: December 8, 2005Inventors: Won Bang, Yen-Kun Wang, Lawrence Lei
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Publication number: 20050218115Abstract: Embodiments of the present invention are directed to reducing clogging of nozzles and to reducing flow variance through the nozzles in a semiconductor processing chamber. In one embodiment, a method of introducing a gas into a semiconductor processing chamber comprises providing a nozzle having a proximal portion connected to a chamber wall or a gas distribution ring of the semiconductor processing chamber and a distal portion oriented inwardly away from the chamber wall into an interior of the semiconductor processing chamber. The nozzle includes a proximal end coupled with a gas supply. The nozzle includes a nozzle opening at a distal end. The nozzle includes a nozzle passage extending from the proximal end to the distal end.Type: ApplicationFiled: March 14, 2005Publication date: October 6, 2005Applicant: Applied Materials, Inc.Inventors: Lawrence Lei, Siqing Lu, Steven Gianoulakis, Irene Chou, David Sun
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Publication number: 20050139160Abstract: Embodiments of the present invention generally relate to a small volume chamber with a substrate support. One embodiment of a processing chamber includes a first assembly having a substrate support, a pumping ring disposed around a perimeter of the substrate receiving surface, and a gas distribution assembly disposed over the substrate support. The chamber may further include a gas distribution assembly disposed over the substrate support. The first assembly and the gas distribution assembly can be selectively positioned between an open position and a closed position.Type: ApplicationFiled: February 16, 2005Publication date: June 30, 2005Inventors: Lawrence Lei, Alfred Mak, Gwo-Chuan Tzu, Avi Tepman, Ming Xi, Walter Glenn
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Publication number: 20050083048Abstract: Embodiments of the invention generally provide an electrochemical plating system. The plating system includes a substrate loading station positioned in communication with a mainframe processing platform, at least one substrate plating cell positioned on the mainframe, and at least one substrate inspection station positioned on either the mainframe or in the loading station. The inspection station is generally configured to use an eddy current sensing device to determine the thickness of a conductive layer on the substrate.Type: ApplicationFiled: October 21, 2004Publication date: April 21, 2005Inventors: Lawrence Lei, Chen-An Chen
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Publication number: 20050059241Abstract: A method and system to reduce the resistance of refractory metal layers by controlling the presence of fluorine contained therein. The present invention is based upon the discovery that when employing ALD techniques to form refractory metal layers on a substrate, the carrier gas employed impacts the presence of fluorine in the resulting layer. As a result, the method features chemisorbing, onto the substrate, alternating monolayers of a first compound and a second compound, with the second compound having fluorine atoms associated therewith, with each of the first and second compounds being introduced into the processing chamber along with a carrier gas to control a quantity of the fluorine atoms associated with the monolayer of the second compound.Type: ApplicationFiled: September 29, 2004Publication date: March 17, 2005Inventors: Moris Kori, Alfred Mak, Jeong Byun, Lawrence Lei, Hua Chung, Ashok Sinha, Ming Xi
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Publication number: 20050014299Abstract: Systems, methods and computer-readable mediums are provided for improving and controlling uniformity of resistance (RS) of metal line, e.g., copper, conductivity in semiconductor processing. In-line or integrated metrology and data feedback and/or feed-forward may be used for monitoring and adjusting the chemical mechanical planarization (CMP) process. Measurements are obtained of deposition layer thickness after the chemical vapor deposition (CVD) process, and of the copper trench profile, including depth, top critical dimension, and bottom critical dimension, following the Etch process. The trench profile measurements are used as feed forward information, together with the CVD measurement, in adjusting the removal rate at the CMP to leave an acceptable amount of material in the copper cross section in the semiconductor product, so that a target resistance is attained.Type: ApplicationFiled: March 26, 2004Publication date: January 20, 2005Applicant: Applied Materials, Inc.Inventors: Susie Yang, Lawrence Lei
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Patent number: 6374512Abstract: Method and apparatus for reducing contamination of a substrate in a substrate processing system. The apparatus has a substrate support, a gas directing shield circumscribing the substrate support and a shadow ring disposed vertically above the substrate support and gas directing shield for retaining the substrate. The gas directing shield and substrate support define an annular channel that is provided with an edge purge gas. The edge purge gas imparts a force at the edge of a substrate resting on the substrate support the lifts it off the substrate supports and against the shadow ring. The shadow ring further has a plurality of conduits extending from its upper surface to its sidewall to provide a path for the edge purge gas to vent and to impede the flow of process gases under the backside and around the edge of the substrate.Type: GrantFiled: August 1, 2000Date of Patent: April 23, 2002Assignee: Applied Materials, Inc.Inventors: Xin Sheng Guo, Shin-Hung Li, Lawrence Lei
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Patent number: 6296712Abstract: The invention provides a substrate support member and a purge guide for directing purge gas past the edge of a substrate and towards the outer perimeter of the chamber. The purge guide includes a plurality of holes disposed around the inner perimeter thereof to provide a purge gas passage and to prevent purge gas from interfering with the deposition chemistry on the surface of the substrate. A substrate support member is also provided having a vacuum chuck for securing a substrate to the upper surface thereof. The substrate support member preferably includes a shoulder on which the purge guide is supported during processing. The invention also provides a method for shielding an edge of a substrate by flowing a purge gas adjacent the edge of the substrate and then through a plurality of purge holes on a purge guide.Type: GrantFiled: April 6, 1998Date of Patent: October 2, 2001Assignee: Applied Materials, Inc.Inventors: Xin Sheng Guo, Mohan Bhan, Justin Jones, Lawrence Lei, Russell Ellwanger, Mei Chang, Ashok Sinha, Avi Tepman
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Patent number: 6096135Abstract: Method and apparatus for reducing contamination of a substrate in a substrate processing system. The apparatus has a substrate support, a gas directing shield circumscribing the substrate support and a shadow ring disposed vertically above the substrate support and gas directing shield for retaining the substrate. The gas directing shield and substrate support define an annular channel that is provided with an edge purge gas. The edge purge gas imparts a force at the edge of a substrate resting on the substrate support the lifts it off the substrate supports and against the shadow ring. The shadow ring further has a plurality of conduits extending from its upper surface to its sidewall to provide a path for the edge purge gas to vent and to impede the flow of process gases under the backside and around the edge of the substrate.Type: GrantFiled: July 21, 1998Date of Patent: August 1, 2000Assignee: Applied Materials, Inc.Inventors: Xin Sheng Guo, Shin-Hung Li, Lawrence Lei